Merge pull request #29490 from storybookjs/valentin/fix-race-condition-during-init

Core: Fix race condition during empty folder init

Author: kasperpeulen

code/core/src/common/utils/file-cache.ts

@@ -85,13 +85,15 @@ export class FileSystemCache {
     orgOpts: CacheSetOptions | number = {}
   ): Promise<void> {
     const opts: CacheSetOptions = typeof orgOpts === 'number' ? { ttl: orgOpts } : orgOpts;
+    mkdirSync(this.cache_dir, { recursive: true });
     await writeFile(this.generateHash(name), this.parseSetData(name, data, opts), {
       encoding: opts.encoding || 'utf8',
     });
   }
 
   public setSync<T>(name: string, data: T, orgOpts: CacheSetOptions | number = {}): void {
     const opts: CacheSetOptions = typeof orgOpts === 'number' ? { ttl: orgOpts } : orgOpts;
+    mkdirSync(this.cache_dir, { recursive: true });
     writeFileSync(this.generateHash(name), this.parseSetData(name, data, opts), {
       encoding: opts.encoding || 'utf8',
     });